✖Air mass flow rate is the mass of intake air that is flowing per unit time.ⓘ Air Mass Flow Rate [m_af]			+10% -10%
✖Crankshaft revolutions per power stroke is defined as the number of crankshaft rotations when the ic engine takes one complete cycle.ⓘ Crankshaft revolutions per power stroke [n_R]			+10% -10%
✖Engine RPM is defined as the number of rotations of the engine crankshaft in one minute.ⓘ Engine RPM [E_rpm]			+10% -10%

✖Mass of air at intake is defined as the mass of the air that is drawn into the cylinder during intake stroke.ⓘ Intake air mass of engine cylinder [m_a]

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Formula

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Intake air mass of engine cylinder

Formula

`"m"_{"a"} = ("m"_{"af"}*"n"_{"R"})/"E"_{"rpm"}`

Example

`"0.003438kg"=("0.9kg/s"*"2")/"5000rev/min"`

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Intake air mass of engine cylinder Solution

STEP 0: Pre-Calculation Summary

Formula Used

Mass of Air at Intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine RPM
m_a = (m_af*n_R)/E_rpm
This formula uses 4 Variables

Variables Used

Mass of Air at Intake - (Measured in Kilogram) - Mass of air at intake is defined as the mass of the air that is drawn into the cylinder during intake stroke.
Air Mass Flow Rate - (Measured in Kilogram per Second) - Air mass flow rate is the mass of intake air that is flowing per unit time.
Crankshaft revolutions per power stroke - Crankshaft revolutions per power stroke is defined as the number of crankshaft rotations when the ic engine takes one complete cycle.
Engine RPM - (Measured in Radian per Second) - Engine RPM is defined as the number of rotations of the engine crankshaft in one minute.

STEP 1: Convert Input(s) to Base Unit

Air Mass Flow Rate: 0.9 Kilogram per Second --> 0.9 Kilogram per Second No Conversion Required
Crankshaft revolutions per power stroke: 2 --> No Conversion Required
Engine RPM: 5000 Revolution per Minute --> 523.598775571636 Radian per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

m_a = (m_af*n_R)/E_rpm --> (0.9*2)/523.598775571636

Evaluating ... ...

m_a = 0.00343774677096

STEP 3: Convert Result to Output's Unit

0.00343774677096 Kilogram --> No Conversion Required

FINAL ANSWER

0.00343774677096 ≈ 0.003438 Kilogram <-- Mass of Air at Intake

(Calculation completed in 00.020 seconds)

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Created by Syed Adnan

Ramaiah University of Applied Sciences (RUAS), bangalore

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< 24 For 4 Stroke Engine Calculators

Volumetric efficiency of IC engine

Go Volumetric efficiency of IC Engine = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/(Air density at intake*Theoretical volume of engine*Engine Speed)

Rate of heat conduction of engine wall

Go Rate of Heat Conduction of Engine Wall = ((Thermal conductivity of material)*Surface Area of Engine Wall*Temperature Difference across Engine Wall)/Thickness of Engine Wall

Indicated Power of Four-stroke Engine

Go Indicated Power = (Number of Cylinders*Mean Effective Pressure*Stroke Length*Area of Cross Section*(Engine Speed))/(2)

Brake power measured with dynamo meter

Go Brake Power = (pi*Pulley Diameter*(Engine Speed*60)*(Dead weight-Spring Scale Reading))/60

Volumetric Efficiency for 4S engines

Go Volumetric Efficiency = ((2*Air Mass Flow Rate)/(Air density at intake*Piston Swept Volume*(Engine Speed)))*100

Brake Mean Effective Pressure of 4S Engines given Brake power

Go Brake Mean Effective Pressure = (2*Brake Power)/(Stroke Length*Area of Cross Section*(Engine Speed))

Fuel conversion efficiency

Go Fuel conversion efficiency = Work done per Cycle in IC Engine/(Mass of Fuel Added per Cycle*Heating Value of the Fuel)

Bmep given engine torque

Go Brake Mean Effective Pressure = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed

Combustion efficiency

Go Combustion efficiency = Heat added by combustion per cycle/(Mass of Fuel Added per Cycle*Heating Value of the Fuel)

Work done per cycle in ic engine

Go Work done per Cycle in IC Engine = (Indicated engine power*Crankshaft revolutions per power stroke)/Engine RPM

Intake air mass of engine cylinder

Go Mass of Air at Intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine RPM

Displaced volume in engine cylinder

Go Displaced volume = (Piston Stroke*pi*(Engine cylinder bore in meter^2))/4

Intake air density

Go Air density at intake = Intake Air Pressure/([R]*Intake Air Temperature)

Thermal efficiency of IC engine

Go Thermal Efficiency of IC Engine = Work done per Cycle in IC Engine/Heat added by combustion per cycle

Indicated mean effective pressure given mechanical efficiency

Go Indicated Mean Effective Pressure = Brake Mean Effective Pressure/Mechanical Efficiency of IC Engine

Frictional mean effective pressure

Go Frictional Mean Effective Pressure = Indicated Mean Effective Pressure-Brake Mean Effective Pressure

Volumetric efficiency of IC engine given actual volume of engine cylinder

Go Volumetric efficiency of IC Engine = Actual volume of intake air/Theoretical volume of engine

Connecting rod length to crank radius ratio

Go Connecting rod length to crank radius ratio = Connecting rod length/Crank Radius of Engine

Ratio of cylinder bore to piston stroke

Go Connecting rod length to crank radius ratio = Connecting rod length/Crank Radius of Engine

Total cylinder volume of IC engine

Go Total Volume of an Engine = Total Number of Cylinders*Total Volume of Engine Cylinder

Fuel conversion efficiency given thermal conversion efficiency

Go Fuel conversion efficiency = Combustion efficiency*Thermal Conversion Efficiency

Actual intake air volume per cylinder

Go Actual volume of intake air = Mass of Air at Intake/Air density at intake

Frictional power of engine

Go Frictional power of engine = Indicated Power-Brake Power

Horsepower of engine

Go Horsepower of Engine = (Engine Torque*Engine RPM)/5252

Intake air mass of engine cylinder Formula

Mass of Air at Intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine RPM
m_a = (m_af*n_R)/E_rpm

What is intake air mass of engine cylinder?

The intake air mass of engine cylinder is defined as the mass of air that is sucked into the engine cylinder during the intake stroke of the IC engine.

How to Calculate Intake air mass of engine cylinder?

Intake air mass of engine cylinder calculator uses Mass of Air at Intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine RPM to calculate the Mass of Air at Intake, The Intake air mass of engine cylinder formula is defined as the mass of air that is sucked into the engine cylinder during the intake stroke of the IC engine. Mass of Air at Intake is denoted by m_a symbol.

How to calculate Intake air mass of engine cylinder using this online calculator? To use this online calculator for Intake air mass of engine cylinder, enter Air Mass Flow Rate (m_af), Crankshaft revolutions per power stroke (n_R) & Engine RPM (E_rpm) and hit the calculate button. Here is how the Intake air mass of engine cylinder calculation can be explained with given input values -> 0.003438 = (0.9*2)/523.598775571636.

FAQ

What is Intake air mass of engine cylinder?

The Intake air mass of engine cylinder formula is defined as the mass of air that is sucked into the engine cylinder during the intake stroke of the IC engine and is represented as m_a = (m_af*n_R)/E_rpm or Mass of Air at Intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine RPM. Air mass flow rate is the mass of intake air that is flowing per unit time, Crankshaft revolutions per power stroke is defined as the number of crankshaft rotations when the ic engine takes one complete cycle & Engine RPM is defined as the number of rotations of the engine crankshaft in one minute.

How to calculate Intake air mass of engine cylinder?

The Intake air mass of engine cylinder formula is defined as the mass of air that is sucked into the engine cylinder during the intake stroke of the IC engine is calculated using Mass of Air at Intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine RPM. To calculate Intake air mass of engine cylinder, you need Air Mass Flow Rate (m_af), Crankshaft revolutions per power stroke (n_R) & Engine RPM (E_rpm). With our tool, you need to enter the respective value for Air Mass Flow Rate, Crankshaft revolutions per power stroke & Engine RPM and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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